<template>
  <div class="">
    <section class="main">
      <input
        id="toggle-all"
        class="toggle-all"
        type="checkbox"
        :checked="allOptions"
      />
      <label for="toggle-all">Mark all as complete</label>
      <ul class="todo-list">
        <!-- 当任务已完成，可以给 li 加上 completed 类，会让元素加上删除线 -->
        <li
          :class="{ completed: item.checked }"
          v-for="item in list"
          :key="item.id"
        >
          <div class="view">
            <input
              class="toggle"
              type="checkbox"
              :checked="item.checked"
              @change="choose(item.id)"
            />
            <label>{{ item.task }}</label>
            <button class="destroy" @click="deleteItem(item.id)"></button>
          </div>
        </li>
      </ul>
    </section>
  </div>
</template>
<script>
export default {
  name: 'ToMain',
  props: {
    list: {
      type: Array
    }
  },
  methods: {
    deleteItem (id) {
      this.$emit('deleteItem', id)
    },
    choose (id) {
      this.$emit('choose', id)
    }
  },
  computed: {
    allOptions () {
      return this.list.every(item => item.checked)
    }
  }
}
</script>
<style lang="less" scoped></style>
